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Freedom is the right to tell people what they do not want to hear.

— George Orwell, English Novelist

Somewhere, something incredible is waiting to be known.

— Carl Sagan, American Astronomer

Refusal to believe until proof is given is a rational position; denial of all outside of our own limited experience is absurd.

— Annie Besant, British Theosophist

Every cause produces more than one effect.

— Herbert Spencer, English Philosopher

I strongly believe that fundamental science cannot be driven by instructional, industrial and government or military pressures.

— CV Raman, Indian Physicist

Study without desire spoils the memory, and it retains nothing that it takes in.

— Leonardo da Vinci, Italian Renaissance Artist

People who are more rational don’t perceive emotion less, they just regulate it better.

— Jonah Lehrer, American Novelist

Give me 6 hours to chop a tree, I will spend the first 4 sharpening my axe.

— Abraham Lincoln, Former US President

Maybe true travel is not the transportation of the body, but a change of perception, renewing the mind. 

— Ben Okri,  Nigerian Poet and Novelist

That which can be asserted without evidence, can be dismissed without evidence.

— Christopher Hitchens, Author
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